DSI version 1.0 RADIOSS / LS-DYNA / NASTRAN Conversion

 

August, 2007

 

OVERVIEW

 

The RADIOSS interface was originally released in VPG 2.0 as a complete RADIOSS interface, supporting fixed format input files from RADIOSS V2.1, V2.2, V2.3, V3.1, V4.1 and V4.4, and has the ability to write RADIOSS V3.1, V4.1 and V4.4. DSI not only reads RADIOSS files but also allows translation of RADIOSS files to NASTRAN or LS-DYNA960 format.  The capability of this interface has been improved in DSI 1.0, to allow the import/export of RADIOSS and translation into LS-DYNA version 970.

 

When reading in a RADIOSS file DSI, adopts a RADIOSS environment with RADIOSS terminology. DSI allows model manipulation of RADIOSS materials, element properties,

boundary conditions, local coordinates, loads, initial velocities, contact and rigid walls.

 

To translate a RADIOSS file to another analysis format such as LS-DYNA or NASTRAN, the user changes the analysis program in the Setup Menu.  This will translate all RADIOSS materials, element properties, boundary conditions, etc. to the new analysis environment.  DSI will prompt the user for certain user-defined information in the translation.

 

The translation of the code requires that certain assumptions be made in the equivalencies of elements properties, contacts, etc.  Where no equivalency could be found, due to the fact that one code supports or defines an entity that another code does not, the closest substitution is made.  In these cases, the user should check the database translation to be sure that the entity is defined adequately in the translated model (a complete list of all translations follows).  When converting RADIOSS to LS-DYNA or vice versa, the user should always check the definition of spring elements, loading conditions, air bags, seat belt parts, dummies and barriers. These entities are either unsupported in the translation or the adequacy of the translation is questionable.

 

A complete list of all translations follows.

 

 

RADIOSS INTERFACE

 

1. The new RADIOSS interface template supports all RADIOSS cards in version 4.4, 4.1, 3.1 and 2.3.

2. DSI 1.0 allows model manipulation of RADIOSS materials, element properties, boundary conditions, local coordinates, loads, initial velocities, contact and rigid walls.

3. DSI 1.0 also supports the following functions: accelerometer, sensor, fixed velocity, section and monitored volume.

4. Rigid body and cylindrical joint elements were enhanced to use node set.

5. Multiple RADIOSS input files can be read at one time and directly read/write RADIOSS input files in DYNA970/NASTRAN database.

 

 

KEY SUMMARIES FOR CONVERSION RADIOSS TO LS-DYNA970

 

ELEMENT

 

1. Primary Nodal Rigid Body should be re-calculated by DSI 1.0.

2. Beam, Truss and Spring elements in Radioss converts to Beam element in LS-DYNA V970.

3. Joint element in Radioss convert to CONSTRAINED_NODAL_BODY and one CONSTRAINED_JOINT_CYLINDRICAL when number of node is equal 4. Otherwise DSI converts one CONSTRAINED_NODAL_RIGID_BODY.

4. Rigid Body element without mass and inertia in Radioss convert to CONSTRAINED_NODAL_RIGID_BODY, but when the Rigid Body element with mass and inertia in Radioss converts to   CONSTRAINED_NODAL_RIGID_BODY_INERTIA. The Radioss primary node number(RBID) be used as the parameter NODEID on card 2 of CONSTRAINED_NODAL_RIGID_BODY_INERTIA.

 

 

ELEMENT PROPERTY

 

1. Delete VOID, RIVET property in Radioss.

2. BEAM converts SECTION_BEAM(RESULTANT), TRUSS converts SECTION_BEAM(TRUSS)

and SPRING converts SECTION_BEAM(DISCRETE)

3.SPRING elements(TYPE 4, 8, 12 and 13) in Radioss convert into DYNA V970 material Type196(*MAT_GENERAL_SPRING_DISCRETE_BEAM).  This Model permits elastic and elastoplastic spring with damping to be represented with a discrete beam element type 6. For elastic behavior, a load curve defines force or moment versus displacement or rotation. For inelastic behaivor, a load curve yield force or moment versus plastic deflection or rotation, which can vary in tension and compression.

 

 

MATERIAL PROPERTY

 

1. Radioss material type 2-ELASTIC_PLASTIC converts to MAT_SIMPLIFIED_JOHNSON_COOK.

2. Radioss material type 21-ELASTIC_PLASTIC_DP converts to DYNA V970 material type 57(MAT_LOW_DENSITY_FOAM).

3. Radioss material type 28-ORTHOTROPIC converts to DYNA V970 material type26 MAT_HONEYCOMB in relative SECTION_SOLID and creates new HOURGLASS card in relative PART’s HGID field in DYNA970 input file. The Radioss yield functions for the HONEYCOMB material which as the abscissa values must be converted into DYNA V970 curves with abscissa values.

4. AIRBAG(MONITORED VOLUMESS) : MONITORED VOLUMES in Radioss converts SIRBAG_SIMPLE_AIRBAG_MODEL and replace the original airbag material type 27-ELASTIC_PLASTIC_BRITTLE converts to DYNA V970 material type 34 MAT_FABLIC.

5. SEATBELT with Radioss material type 1-ELASTIC converts to DYNA V970 material type 34 MAT_FABLIC with very small young’s modulus.

 

 

CONTACT

 

1. All the Radioss contacts convert to CONTACT_AUTOMATIC_SINGLE_SURFACE contact in Dyna and create a new one more CONTACT_AUTOMATIC_SINGLE_SURFACE for full model.

 

 

DSI 1.0 RADIOSS INTERFACE AND CONVERSION TABLE

 

RADIOSS Interface Notes:

 

 

1. RADIOSS INTERFACE.

 

       DSI 1.0 SUPPORTS ALL INPUT CARDS OF RADIOSS V4.1 FIXED FORMAT.

 

RADIOSS' Entity                    Location in DSI GUI

 

CONTROL VARABLES                      RADIOSS MISC./CONTROL CARDS"

MATERIALS                              MATERIAL PROPERTY

BOUNDARY CONDITIONS                  BOUNDARY CONDITIONS/SPC

SKEW FRAMES                                 UTIL/COORDINATE SYSTEM

PROPERTY SETS                               ELEMENT PROPERTY

FUNCTIONS                                   UTIL/LOAD CURVE

LOADS                                             BOUNDARY CONDITIONS/LOADING

INITIAL VELOCITIES                           BOUNDARY CONDITIONS/INITIAL VELOCITY     

ACCELEROMETERS                           RADIOSS MISC./ACCELEROMETERS

SENSORS                                    "RADIOSS MISC./SENSORS"

GRAVITY                                           BOUNDARY CONDITIONS/GRAVITY"

INTERFACES                             CONTACT

RIGID WALLS                                    CONTACT

RIGID BODIES                                     ELEMENT OPTIONS

ADDED MASSES                                ELEMENT OPTIONS

IMPOSED VELOCITIES                        BOUNDARY CONDITIONS/IMPOSED VELOCITY

RIVETS SPOTWELDS                         ELEMENT OPTIONS

SECTIONS                                      RADIOSS MISC./SECTION CARDS

CYLINDRICAL JOINTS                        ELEMENT OPTIONS

MONITORED VOLUMES            RADIOSS MISC./MONITORED VOLUMES.     

 

 

2. CONVERTING FROM RADIOSS TO DYNA

 

2.1 ELEMENT:

 

       RADIOSS (V4.1)          ===>             DYNA (V970)

 

BEAM                                          BEAM

TRUSS                                         BEAM

SOLID                                           SOLID

SHELL                                          SHELL

SPRING                                                  BEAM

MASS                                                   MASS

JOINT                                                   If number of node is equal 4, we will

                                           convert it into 2 CONSTRAINED_NODAL_

                                           RIGID_BODY and 1 CONSTRAINED_JOINT_

                                           CYLINDRICAL. Otherwise we will convert

                                           it into 1 CONSTRAINED_NODAL_RIGID_BODY.

 

RIGID BODY                                             CONSTRAINED_NODAL_RIGID_BODY

                                                    (Doesn't have mass and inertia.)

                                                                          CONSTRAINED_NODAL_RIGID_BODY_INERTIA

                                                               (Including mass and inertia. The RADIOSS

                                                   primary node number (RBID) be used as

                                                   the parameter NODEID on card 2 of

                                                             *CONSTRAINED_NODAL_RIGID_BODY_INERTIA.)

 

         SPOTWELD                                              CONSTRAINED_SPOTWELD

            

 

     2.2  ELEMENT PROPERTY:

 

         Delete VOID, RIVET property.  Convert spring stiffness into DYNA material.

 

         RADIOSS (V4.1)        ===>             DYNA (V970)

 

         1 -SHELL                                                SECTION_SHELL

         2 -TRUSS                                                         SECTION_BEAM (truss)

         3 -BEAM                                                      SECTION_BEAM (resultant)

         4 -SPRING                                                        SECTION_BEAM (discrete)

         6 -ORTHOTROPIC SOLID                                 SECTION_SOLID

         8 -GENERAL SPRING                                  SECTION_BEAM (discrete)

         9 -ORTHOTROPIC SHELL                                SECTION_SHELL

         10-COMP. SHELL                                  SECTION_SHELL

         11-COMP. SHELL                                             SECTION_SHELL

         12-3-NODES SPRING                                  SECTION_BEAM (discrete)

         13-BEAM TYPE SPRING                                  SECTION_BEAM (discrete)

         14-GENERAL SOLID                                   SECTION_SOLID

 

         CONVERTS RADIOSS SPRING PROPERTY(TYPE 4,8,12,13) INTO DYNA's MATERIAL 196.

 

         IF H=0, N1=0: LINEAR ELASTIC SPRING

                       K(DYNA) = K(RADIOSS)

                       D(DYNA) = C(RADIOSS)

         IF H=0, N1>0: NONLINEAR ELASTIC SPRING

                       K(DYNA) = A(RADIOSS)  (IF A(RADIOSS)=0.0, THEN K(DYNA)=1.0)

                       C2(DYNA) = B(RADIOSS)/A(RADIOSS)

                       FLCID=GLCID = N1(RADIOSS)

                       HLCID = N2(RADIOSS)

                       DLE(DYNA) = D(RADIOSS)             

         IF H=1, N1>0:

                       K(DYNA) = K(RADIOSS)

                       A(RADIOSS) = 1.0 IS ASSUMED

                       C2(DYNA) = B(RADIOSS)

                       FLCID=GLCID = N1(RADIOSS)

                       HLCID = N2(RADIOSS)

                       DLE(DYNA) = D(RADIOSS)

 

         CONVERT RADIOSS SPRING INTO DYNA BEAM.

 

         IN ALL CASES, IF THE LENGTH OF SPRING IS FINITE, SET SCOOR IN

            *SECTION_BEAM TO 2. IF THE LENGTH IS VERY SMALL(<=0.000001) OR ZERO,

            SET SCOOR TO 0.

 

2.3  MATERIAL PROPERTY:

 

         RADIOSS(V4.1)         ===>             DYNA(V970)

 

         0 -VOID                                                  1 -MAT_ELASTIC

         1 -ELASTIC                                                 1 -MAT_ELASTIC

         2 -ELASTIC_PLASTIC                                     98-MAT_SIMPLIFIED_JOHNSON_COOK

         3 -ELASTIC_PLASTIC_HYDRODYNAMIC       10-MAT_ELASTIC_PLASTIC_HYDRO

         4 -JOHNSON_COOK                              15-MAT_JOHNSON_COOK

         6 -HYDRODYNAMIC_VISCOUS                      9 -MAT_NULL

         10-ELASTIC_PLASTIC_DP                     63-MAT_CRUSHABLE_FOAM

         14-ELASTIC_PLASTIC_ORTHOTROPIC 2 -MAT_ORTHOTROPIC_ELASTIC

         19-ELASTIC_ORTHOTROPIC                          130 -MAT_SPECIAL_ORTHOTROPIC

         21-ELASTIC_PLASTIC_DP                     57-MAT_LOW_DENSITY_FOAM

            There is no direct conversion of RADIOSS mat 21 to *MAT_LOW_DENSITY_FOAM.

            An example input for a mat57 seat foam is attached.

 

$ UNITS:  kg, mm, ms, GPa

*MAT_LOW_DENSITY_FOAM

$  seat foam

     571258.8200E-08    0.0045      2222       0.4       0.0       0.0       .05

       0.0       0.0       0.0       0.0       0.0       0.0  

*DEFINE_CURVE

      2222         0       1.0      0.01       0.0       0.0         0

   0.0                 0.0

   0.0625              0.119800001

   0.122500002         0.383390009

   0.177499995         0.377400011

   0.234999999         0.413399994

   0.280699998         0.444999993

   0.344999999         0.466100007

   0.397000015         0.497999996

   0.444900006         0.53670001

   0.49000001          0.561600029

   0.528999984         0.601000011

   0.564999998         0.653999984

   0.597000003         0.721000016

   0.622500002         0.818000019

   0.644900024         0.897000015

   0.660000026         0.949999988

   0.666999996         0.989000022

   0.670000017         0.99000001

   0.671999991         1.0

   0.699000001         1.20000005

   0.75                 1.51999998

   0.800000012         2.19000006

   0.808000028         2.30299997      

 

         22-ELASTIC_PLASTIC                             81-MAT_PLASTICITY_WITH_DAMAGE

         23-ELASTIC_PLASTIC                             81-MAT_PLASTICITY_WITH_DAMAGE

         24-ELASTIC_PLASTIC_BRITTLE                  16-MAT_PSEUDO_TENSOR

         25-ELASTIC_PLASTIC_ORTHOTROPIC        2 -MAT_ORTHOTROPIC_ELASTIC

         27-ELASTIC_PLASTIC_BRITTLE                  81-MAT_PLASTICITY_WITH_DAMAGE

 

         28-ORTHOTROPIC                              26-MAT_HONEYCOMB

         

 We set DYNA's value PR=0.0, SIGY=1.0, VF=0.2, MU=0.2, and ELFORM=1 in relative *SECTION_SOLID card. We create a *HOURGLASS card with IHQ=4, and put it into relative *PART's HGID field.

          

In RADIOSS, if the relative element property ID is 0 or the element property type is not TYPE 6, we will set the material directions 1,2,3  align with the global axes X,Y,Z, AOPT=2, (A1,A2,A3)=(1,0,0), (D1,D2,D3)=(0,1,0). Otherwise we will set AOPT=0, and map the RADIOSS 1,2,3  axes to the LS-DYNA b,c,a axes. The RADIOSS yield functions for the honeycomb material which have mu as the abscissa values must be converted into LS-DYNA curves with mu/(1+mu) as the abscissa values. In the discussion above, it is assumed that the angle PHI in the RADIOSS orthotropic solid property set data is set to zero.  If PHI is nonzero, further thought must be given to the conversion.

 

         32-ELASTIC_PLASTIC_ORTHOTROPIC                 3 -MAT_PLASTIC_KINEMATIC

         33-VISCOPLASTIC                              53-MAT_CLOSED_CELL_FOAM

         34-VISCOELASTIC                              61-MAT_KELVIN-MAXWELL_VISCOELASTIC

         35-VISCOELASTIC                              76-MAT_GENERAL_VISCOELASTIC

         36-ELASTIC_PLASTIC                                  24-MAT_PIECEWISE_LINEAR_ PLASTICITY

         38-VISCOELASTIC                              76-MAT_GENERAL_VISCOELASTIC

         40-VISCOELASTIC                              76-MAT_GENERAL_VISCOELASTIC

         42-HYPERELASTIC                              77(5)-MAT_OGDEN_RUBBER

         43-ELASTIC_PLASTIC_ORTHOTROPIC      24-MAT_PIECEWISE_LINEAR_ PLASTICITY

                                                  

           

2.4 BOUNDARY AND LOAD CONDITION:

 

         RADIOSS (V4.1)             ===>             DYNA (V970)

 

         SPC                            BOUNDARY_SPC_SET

         CONCENTRATED LOAD             LOAD_NODE_SET

         PRESSURE LOAD                           LOAD_SEGMENT_SET

         INITIAL VELOCITY                          INITIAL_VELOCITY

         IMPOSED VELOCITY                           BOUNDARY_PRESCRIBED_MOTION_SET

            

2.5 CONTACT AND RIGIDWALL:

 

         Delete RIGIDWALL which not include node.

         Convert slave/master shell material/property set into segment set.

 

         RADIOSS(V4.1)              ===>             DYNA(V970)

       

         2 -TIED                                       CONTACT_AUTOMATIC_SINGLE_SURFACE

         3 -SLIDE/VOID                                     CONTACT_AUTOMATIC_SINGLE_SURFACE

         5 -SLIDE/VOID                                     CONTACT_AUTOMATIC_SINGLE_SURFACE

         6 -SLIDE/VOID                                     CONTACT_AUTOMATIC_SINGLE_SURFACE

         7 -SLIDE/VOID                                     CONTACT_AUTOMATIC_SINGLE_SURFACE

         8 -SLIDE                                              CONTACT_DRAWBEAD

         10-TIED/VOID                             CONTACT_AUTOMATIC_SINGLE_SURFACE

         11-SLIDE/VOID                                    CONTACT_AUTOMATIC_SINGLE_SURFACE

         Creates a new CONTACT_AUTOMATIC_SINGLE_SURFACE.

         Set all CONTACT_AUTOMATIC_SINGLE_SURFACE's SOFT=1, IGNORE=1.

 

         RIGIDWALL                                         RIGIDWALL_GEOMETRIC

 

2.6 AIRBAG (MONITORED VOLUMES):

 

         MONITORED VOLUMES                          AIRBAG_SIMPLE_AIRBAG_MODEL

                                                         REPLACES THE ORIGINAL MATERIAL WITH *MAT_FABRIC.

                                               

2.7 SEATBELT:

 

         CONVERTS RADIOSS'S MATERIAL TYPE 1 WITH VERY SMALL YOUNG'S MODULUS INTO

         DYNA'S *MAT_FABRIC.

 

2.8 OTHERS:

 

         Delete TRUSS SET, MAT SET, PROP SET.

         Delete ACCELEROMETER, MONITORED VOLUME, SECTIONS,

                SENSOR, CONTROL CARDS.

 

         RADIOSS (V4.1)             ===>             DYNA (V970)

 

         FUNCTION                                       DEFINE_CURVE

         SKEW (moving)                                   DEFINE_COORDINATE_NODES

         SKEW (fixed)                             DEFINE_COORDINATE_VECTOR

 

 

3. CONVERTING FROM DYNA TO RADIOSS

 

      3.1 ELEMENT:

 

         Delete INERTIA elements.

 

         DYNA (V970)            ===>             RADIOSS (V4.1)

 

         BEAM                                                    BEAM

         SOLID                                                    SOLID

         SHELL                                                   SHELL

         T-SHELL                                                SOLID

         DISCRETE                                                  SPRING

         (VID is converted into the third node)

         MASS                                                    MASS

         JOINT                                                     JOINT

         CONSTRAINED_NODAL_RIGID_BODY   RIGID BODY

         CONSTRAINED_NODE_SET                       RIGID BODY

         CONSTRAINED_SPOTWELD                      SPOTWELD

         SEATBELT                             BEAM

             

      1.0 ELEMENT PROPERTY:

 

         Delete SPH section.

         Convert spring stiffness into RADIOSS element property.

 

         DYNA (V970)              ===>      RADIOSS (V4.1)

 

         SECTION_BEAM (integrated)                 3 -BEAM

         SECTION_BEAM (resultant)                  3 -BEAM

         SECTION_BEAM (discrete)          3 -BEAM

         SECTION_BEAM (truss)                        3 -BEAM

         SECTION_BEAM (spotweld)                  3 -BEAM

         SECTION_DISCRETE                     4 -SPRING

         SECTION_SHELL                               1 -SHELL

         SECTION_SHELL_ALE                           1 -SHELL

         SECTION_SOLID                                14-GENERAL SOLID

         SECTION_SOLID_ALE                           14-GENERAL SOLID

         SECTION_TSHELL                             14-GENERAL SOLID

         SECTION_SEATBELT               3 -BEAM

 

      3.3 MATERIAL PROPERTY:

 

                       DYNA (V970)             ===>      RADIOSS (V4.1)

 

         1 -MAT_ELASTIC                                                 1 -ELASTIC

         1 -MAT_ELASTIC_FLUID                                      1 -ELASTIC

         2 -MAT_ORTHOTROPIC_ELASTIC                           14-ELASTIC_PLASTIC_ORTHOTROPIC

         2 -MAT_ANISOTROPIC_ELASTIC                          1 -ELASTIC

         3 -MAT_PLASTIC_KINEMATIC                                    2 -ELASTIC_PLASTIC

         4 -MAT_ELASTIC_PLASTIC_THERMAL                2 -ELASTIC_PLASTIC

         5 -MAT_SOIL_AND_FOAM                               33-VISCOPLASTIC

         6 -MAT_VISCOELASTIC                                        34-VISCOELASTIC

         7 -MAT_BLATZ-KO_RUBBER                                    1 -ELASTIC

         8 -MAT_HIGH_EXPLOSIVE_BURN                             1 -ELASTIC

         9 -MAT_NULL                                                        6 -HYDRODYNAMIC_VISCOUS

         10-MAT_ELASTIC_PLASTIC_HYDRO                        3 -ELASTIC_PLASTIC_HYDRODYNAMIC

         10(2) - MAT_ELASTIC_PLASTIC_HYDRO_SPALL  3 -ELASTIC_PLASTIC_HYDRODYNAMIC

         11-MAT_STEINBERG                                         1 -ELASTIC

         11(2) - MAT_STEINBERG_LUND                        1 -ELASTIC

         12-MAT_ISOTROPIC_ELASTIC_PLASTIC                       2 -ELASTIC_PLASTIC

         13-MAT_ISOTROPIC_ELASTIC_FAILURE                       2 -ELASTIC_PLASTIC

         14-MAT_SOIL_AND_FOAM_FAILURE                         33-VISCOPLASTIC

         15-MAT_JOHNSON_COOK                                4 -JOHNSON_COOK

         16-MAT_PSEUDO_TENSOR                                        24-ELASTIC_PLASTIC_BRITTLE

         17-MAT_ORIENTED_CRACK                                       2 -ELASTIC_PLASTIC

         18-MAT_POWER_LAW_PLASTICITY                          2 -ELASTIC_PLASTIC

         19-MAT_STRAIN_RATE_DEPENDENT_PLASTICITY   2 -ELASTIC_PLASTIC

         20-MAT_RIGID                                               1 -ELASTIC

         21-MAT_ORTHOTROPIC_THERMAL                           14-ELASTIC_PLASTIC_ORTHOTROPIC

         22-MAT_COMPOSITE_DAMAGE                            14-ELASTIC_PLASTIC_ORTHOTROPIC

         23-MAT_TEMPERATURE_DEPENDENT                   14-ELASTIC_PLASTIC_ORTHOTROPIC

            _ORTHOTROPIC

         24-MAT_PIECEWISE_LINEAR_PLASTICITY        36-ELASTIC_PLASTIC

         25-MAT_GEOLOGICAL_CAP_MODEL                  24-ELASTIC_PLASTIC_BRITTLE

         26-MAT_HONEYCOMB                                               2 -ELASTIC_PLASTIC

         27-MAT_MOONEY-RIVLIN_RUBBER                           1 -ELASTIC

         28-MAT_RESULTANT_PLASTICITY                             2 -ELASTIC_PLASTIC

         29-MAT_FORCE_LIMITED                                  2 -ELASTIC_PLASTIC

         30-MAT_CLOSED_FORM_SHELL _PLASTICITY         2 -ELASTIC_PLASTIC

         31-MAT_FRAZER_NASH_RUBBER_MODEL          1 -ELASTIC

         32-MAT_LAMINATED_GLASS                                    2 -ELASTIC_PLASTIC

         33-MAT_BARLAT_ANISOTROPIC_PLASTICITY              2 -ELASTIC_PLASTIC

         33(2) - MAT_BARLAT_YLD96                         2 -ELASTIC_PLASTIC

         34-MAT_FABRIC                                                     14-ELASTIC_PLASTIC_ORTHOTROPIC

         35-MAT_PLASTIC_GREEN-NAGHDI_RATE                     2 -ELASTIC_PLASTIC

         36-MAT_3-PARAMETER_BARLAT                              2 -ELASTIC_PLASTIC

         37-MAT_TRANSVERSELY_ANISOTROPIC                      2 -ELASTIC_PLASTIC

             _ELASTIC_PLASTIC

         38-MAT_BLATZ-KO_FOAM                                       33-VISCOPLASTIC

         39-MAT_FLD_TRANSVERSELY_ANISOTROPIC            2 -ELASTIC_PLASTIC

         40-MAT_NONLINEAR_ORTHOTROPIC                  14-ELASTIC_PLASTIC_ORTHOTROPIC

         41-MAT_USER_DEFINED_MATERIAL_MODELS             1 -ELASTIC

         51-MAT_BAMMAN                                                 2 -ELASTIC_PLASTIC

         52-MAT_BAMMAN_DAMAGE                                    2 -ELASTIC_PLASTIC

         53-MAT_CLOSED_CELL_FOAM                           33-VISCOPLASTIC

         54-MAT_ENHANCED_COMPOSITE_DAMAGE               14-ELASTIC_PLASTIC_ORTHOTROPIC

         57-MAT_LOW_DENSITY_FOAM                          33-VISCOPLASTIC

         58-MAT_LAMINATED_COMPOSITE_FABRIC          14-ELASTIC_PLASTIC_ORTHOTROPIC

         59-MAT_COMPOSITE_FAILURE_SHELL_MODEL      14-ELASTIC_PLASTIC_ORTHOTROPIC

         59-MAT_COMPOSITE_FAILURE_SOLID_MODEL            14-ELASTIC_PLASTIC_ORTHOTROPIC

         60-MAT_ELASTIC_WITH_VISCOSITY                         1 -ELASTIC

         61-MAT_KELVIN-MAXWELL_VISCOELASTIC        34-VISCOELASTIC

         62-MAT_VISCOUS_FOAM                                         33-VISCOPLASTIC

         63-MAT_CRUSHABLE_FOAM                                     10-ELASTIC_PLASTIC_DP

         64-MAT_RATE_SENSITIVE_POWERLAW                       2 -ELASTIC_PLASTIC

            _PLASTICITY

         65-MAT_MODIFIED_ZERILLI _ARMSTRONG          2 -ELASTIC_PLASTIC

         66-MAT_LINEAR_ELASTIC_DISCRETE_BEAM               1 -ELASTIC

         67-MAT_NONLINEAR_ELASTIC_DISCRETE_BEAM    1 -ELASTIC

         68-MAT_NONLINEAR_PLASTIC_DISCRETE_BEAM            2 -ELASTIC_PLASTIC

         69-MAT_SID_DAMPER_DISCRETE_BEAM                 1 -ELASTIC

         70-MAT_HYDRAULIC_GAS_DAMPER                   1 -ELASTIC

            _DISCRETE_BEAM

         71-MAT_CABLE_DISCRETE_BEAM                            1 -ELASTIC

         72-MAT_CONCRETE_DAMAGE                             24-ELASTIC_PLASTIC_BRITTLE

         73-MAT_LOW_DENSITY_VISCOUS_FOAM          33-VISCOPLASTIC

         74-MAT_ELASTIC_SPRING_DISCRETE_BEAM        1 -ELASTIC

         75-MAT_BILKHU/DUBOIS_FOAM                              33-VISCOPLASTIC

         76-MAT_GENERAL_VISCOELASTIC                          35-VISCOELASTIC

         77-MAT_HYPERELASTIC_RUBBER                           42-HYPERELASTIC

         77-MAT_OGDEN_RUBBER                                        42-HYPERELASTIC

         78-MAT_SOIL_CONCRETE                               10-ELASTIC_PLASTIC_DP

         79-MAT_HYSTERETIC_SOIL                                      24-ELASTIC_PLASTIC_BRITTLE

         80-MAT_RAMBERG_OSGOOD                      1 -ELASTIC

         81-MAT_PLASTICITY_WITH_DAMAGE                 22-ELASTIC_PLASTIC

         83-MAT_FU_CHANG_FOAM                                      33-VISCOPLASTIC

         86-MAT_ORTHOTROPIC_VISCOELASTIC                 14-ELASTIC_PLASTIC_ORTHOTROPIC

         87-MAT_CELLULAR_RUBBER                                  1 -ELASTIC

         88-MAT_MTS                                                    1 -ELASTIC

         89-MAT_PLASTICITY_POLYMER                          2 -ELASTIC_PLASTIC

         90-MAT_ACOUSTIC                                         1 -ELASTIC

         94-MAT_INELASTIC_SPRING_DISCRETE_BEAM     1 -ELASTIC

         96-MAT_BRITTLE_DAMAGE                                      24-ELASTIC_PLASTIC_BRITTLE

         98-MAT_SIMPLIFIED_JOHNSON_COOK              2 -ELASTIC_PLASTIC

         100-MAT_SPOTWELD                                               1 -ELASTIC

         103-MAT_ANISOTROPIC_VISCOPLASTIC                     33-VISCOPLASTIC

         104-MAT_DAMAGE_1                                         22-ELASTIC_PLASTIC

         105-MAT_DAMAGE_2                                         22-ELASTIC_PLASTIC

         116-MAT_COMPOSITE_LAYUP                                14-ELASTIC_PLASTIC_ORTHOTROPIC

         117-MAT_COMPOSITE_MATRIX                                1 -ELASTIC

         118-MAT_COMPOSITE_DIRECT                                1 -ELASTIC

         123-MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY  36-ELASTIC_PLASTIC

         124-MAT_PLASTICITY_COMPRESSION_TENSION  2 -ELASTIC_PLASTIC

         126-MAT_MODIFIED_HONEYCOMB                           2 -ELASTIC_PLASTIC

         127-MAT_ARRUDA_BOYCE_RUBBER                       42-HYPERELASTIC

         128-MAT_HEART_TISSUE                                     1 -ELASTIC

         129-MAT_LUNG_TISSUE                                       1 -ELASTIC

         130-MAT_SPECIAL_ORTHOTROPIC                  19-ELASTIC_ORTHOTROPIC

         OTHER MATERIAL                                                  1 -ELASTIC

 

      3.4 BOUNDARY AND LOAD CONDITION:

 

         DYNA (V970)                 ===>             RADIOSS (V4.1)

 

         BOUNDARY_SPC_NODE                           SPC

         BOUNDARY_SPC_SET                                        SPC

         INITIAL_VELOCITY                                          INITIAL VELOCITY

         INITIAL_VELOCITY_NODE                          INITIAL VELOCITY

         INITIAL_VELOCITY_GENERATION                       INITIAL VELOCITY

         LOAD_NODE_POINT                                   CONCENTRATED LOAD

           (Deleted, when DOF is equal to 4 or 8)

         LOAD_NODE_SET                                          CONCENTRATED LOAD

           (Deleted, when DOF is equal to 4 or 8)

         LOAD_SEGMENT                                            PRESSURE LOAD

         LOAD_SEGMENT_SET                                    PRESSURE LOAD

         LOAD_SHELL_ELEMENT                           PRESSURE LOAD

         LOAD_SHELL_SET                                    PRESSURE LOAD

         BOUNDARY_PRESCRIBED_MOTION              IMPOSED VELOCITY

            _NODE (velocity)         

         BOUNDARY_PRESCRIBED_MOTION              IMPOSED VELOCITY

            _RIGID (velocity)        

         BOUNDARY_PRESCRIBED_MOTION              IMPOSED VELOCITY

            _RIGID_LOCAL (velocity)  

         BOUNDARY_PRESCRIBED_MOTION              IMPOSED VELOCITY

            _SET (velocity)          

            

      3.5 CONTACT AND RIGIDWALL:

 

         Delete CONTACT_ENTITY, CONTACT_INTERIOR, CONTACT_1D,

                CONTACT_2D_AUTOMATIC_SINGLE_SURFACE,

                CONTACT_2D_AUTOMATIC_SURFACE_TO_SURFACE,

                CONTACT_2D_AUTOMATIC_NODE_TO_SURFACE,

                CONTACT_2D_AUTOMATIC_SURFACE_IN_CONTINUUM,

                CONTACT_2D_PENALTY,

                CONTACT_2D_PENALTY_FRICTION,

                CONTACT_2D_SLIDING_ONLY,

                CONTACT_2D_SLIDING_VOIDS,

                CONTACT_2D_TIED_SLIDING,

                CONTACT_GEBOD.

         Convert slave type 2,3,5,6 into segment set.

         Convert master type 2,3 into segment set.

 

         DYNA (V970)              ===>             RADIOSS (V4.1)

 

         CONTACT_AIRBAG_SINGLE_SURFACE                   7 -SLIDE/VOID

         CONTACT_AUTOMATIC_GENERAL                         7 -SLIDE/VOID

         CONTACT_AUTOMATIC_NODES_TO                   7 -SLIDE/VOID

            _SURFACE

         CONTACT_AUTOMATIC_ONE_WAY                        7 -SLIDE/VOID

            _SURFACE_TO_SURFACE

         CONTACT_AUTOMATIC_SINGLE                     7 -SLIDE/VOID

            _SURFACE

         CONTACT_AUTOMATIC_SURFACE                          7 -SLIDE/VOID

            _TO_SURFACE

         CONTACT_CONSTRAINT_NODES                            7 -SLIDE/VOID

            _TO_SURFACE

         CONTACT_CONSTRAINT_SURFACE                        7 -SLIDE/VOID

            _TO_SURFACE

         CONTACT_DRAWBEAD                                       8 -SLIDE

         CONTACT_ERODING_NODES_TO_SURFACE              7 -SLIDE/VOID

         CONTACT_ERODING_SINGLE_SURFACE           7 -SLIDE/VOID

         CONTACT_ERODING_SURFACE_TO                    7 -SLIDE/VOID

            _SURFACE

         CONTACT_FORCE_TRANSDUCER                           7 -SLIDE/VOID

            _PENALTY

         CONTACT_FORCE_TRANSDUCER                           7 -SLIDE/VOID

            _CONSTRAINT

         CONTACT_FORMING_NODES_TO_SURFACE               7 -SLIDE/VOID

         CONTACT_FORMING_ONE_WAY                             7 -SLIDE/VOID

            _SURFACE_TO_SURFACE

         CONTACT_FORMING_SURFACE_TO_SURFACE     7 -SLIDE/VOID

         CONTACT_NODES_TO_SURFACE                           7 -SLIDE/VOID

         CONTACT_ONE_WAY_SURFACE_TO                 7 -SLIDE/VOID

            _SURFACE

         CONTACT_RIGID_NODES_TO_RIGID_BODY       7 -SLIDE/VOID

         CONTACT_RIGID_BODY_ONE_WAY_TO                     6 -SLIDE/VOID

            _RIGID_BODY

         CONTACT_RIGID_BODY_TWO_WAY_TO                    6 -SLIDE/VOID

            _RIGID_BODY

         CONTACT_SINGLE_EDGE                               7 -SLIDE/VOID

         CONTACT_SINGLE_SURFACE                            7 -SLIDE/VOID

         CONTACT_SLIDING_ONLY                              7 -SLIDE/VOID

         CONTACT_SLIDING_ONLY_PENALTY                 7 -SLIDE/VOID

         CONTACT_SURFACE_TO_SURFACE                        7 -SLIDE/VOID

         CONTACT_TIEBREAK_NODES_TO                          7 -SLIDE/VOID

            _SURFACE

         CONTACT_TIEBREAK_SURFACE_TO                  7 -SLIDE/VOID

            _SURFACE

         CONTACT_TIED_NODES_TO_SURFACE                       7 -SLIDE/VOID

         CONTACT_TIED_SHELL_EDGE_TO                          7 -SLIDE/VOID

            _SURFACE

         CONTACT_TIED_SURFACE_TO_SURFACE         2 -TIED

         CONTACT_TIED_SURFACE_TO_SURFACE_FAILURE 2 -TIED

         RIGIDWALL                                                          RIGIDWALL

 

    

 

 3.6 OTHERS:

 

         Delete T-SHELL SET.

         Delete all other cards that can't be converted.

 

             DYNA (V970)               ===>             RADIOSS (V4.1)

 

         DEFINE_COORDINATE_NODES             SKEW_MOV

         DEFINE_COORDINATE_SYSTEM                    SKEW_MOV

         DEFINE_COORDINATE_VECTOR                    SKEW_FIX

         DEFINE_CURVE                                          FUNCTION

 

 

4. CONVERTING FROM NASTRAN TO DYNA

 

      4.1 ELEMENT:

 

General Comments: When some RBE2s share the common nodes, merge them into one RBE2. Delete RBE3 & CGAP elements.

 

         NASTRAN        ===>              DYNA (V970)

 

         CBAR                                             BEAM

         RBE2                                                        CONSTRAINED_NODAL_RIGID_BODY, CONSTRAINED_NODE_SET  (According to the Dof)

         SHELL                                       SHELL

         SOLID                                             SOLID

         CELAS2                                              DISCRETE

                                                                   (Create DEFINE_SD_ORIENTATION to define the spring direction)

         CELAS1                                              DISCRETE

                                                                   (Create DEFINE_SD_ORIENTATION to define the spring direction)

         RBAR                                             CONSTRAINED_SPOTWELD

         CONM2                                               MASS & INERTIA

         CBEAM                                               BEAM

         CROD                                        BEAM

         CTUBE                                                BEAM

         ISOPARAMETRIC SHELL               SHELL

            

      4.2 ELEMENT PROPERTY:

 

General Comments: Delete PGAP properties.  Convert spring stiffness into DYNA material.

 

         NASTRAN        ===>              DYNA (V970)

 

         PSHELL                                             SECTION_SHELL

         PSOLID                                              SECTION_SOLID

         PBAR                                             SECTION_BEAM (resultant)

         PBEAM                                              SECTION_BEAM (resultant)

         PELAS                                               SECTION_DISCRETE

         PROD                                       SECTION_BEAM (truss)

         PTUBE                                      SECTION_BEAM (integrated)

        

      4.3 MATERIAL PROPERTY:

 

         NASTRAN          ===>             DYNA (V970)

 

         MAT1                                            1 -MAT_ELASTIC

 

      4.4 BOUNDARY AND LOAD CONDITION:

 

         NASTRAN          ===>             DYNA(V970)

 

         SPC                                             BOUNDARY_SPC_SET

         NODE FORCE                         LOAD_NODE_SET

         SHELL PRESSURE                     LOAD_SHELL_SET

         INITIAL VELOCITY                      INITIAL_VELOCITY

            

      4.5 OTHERS:

 

General Comments: Convert NODE SET, ELEMENT SET.

 

         NASTRAN              ===>             DYNA (V970)

 

         LOAD CURVE                                  DEFINE_CURVE

         LOCAL COORDINATE                          DEFINE_COORDINATE_SYSTEM

      

 

5. CONVERTING FROM DYNA TO NASTRAN

 

      5.1 ELEMENT:

 

General Comments: Delete SEATBELT & JOINT elements.

 

         DYNA (V970)         ===>             NASTRAN

 

       BEAM                                                         CBAR, CBEAM, CROD,CTUBE (according to element Prop.)                    

         CONSTRAINED_NODAL_RIGID_BODY                  RBE2

         T-SHELL                                                         SOLID

         SHELL                                                        SHELL

         SOLID                                                        SOLID

         DISCRETE                                                      CELAS1      (Create LCS for spring direction)

         MASS                                                        CONM2

         CONSTRAINED_SPOTWELD                              RBAR

         INERTIA                                                          CONM2

         CONSTRAINED_NODE_SET                               RBE2

            

      5.2 ELEMENT PROPERTY:

 

General Comments: Delete SEATBELT section. Convert spring stiffness into element property.

 

         DYNA (V970)         ===>             NASTRAN

 

        SECTION_BEAM (integrated)                         PBAR, PTUBE (According to ELFORM and CST)

         SECTION_BEAM (resultant)                         PBAR

         SECTION_BEAM (discrete)                          PBAR

         SECTION_BEAM (truss)                           PROD

         SECTION_BEAM (spotweld)                        PBAR

         SECTION_DISCRETE                               PELAS

         SECTION_SHELL                                      PSHELL

         SECTION_SOLID                                       PSOLID

         SECTION_SOLID_ALE                             PSOLID

         SECTION_TSHELL                                    PSOLID

 

      5.3 MATERIAL PROPERTY:

 

         All materials                                               MAT1.

 

      5.4 BOUNDARY AND LOAD CONDITION:

 

         DYNA (V970)         ===>             NASTRAN

 

       BOUNDARY_SPC_NODE                     SPC

         BOUNDARY_SPC_SET                                SPC

         INITIAL_VELOCITY                                      INITIAL VELOCITY

         INITIAL_VELOCITY_NODE                            INITIAL VELOCITY

         INITIAL_VELOCITY_GENERATION                INITIAL VELOCITY

         LOAD_NODE_POINT                                    NODAL FORCE

         LOAD_NODE_SET                              NODAL FORCE

         LOAD_SHELL_ELEMENT                             SHELL PRESSURE

         LOAD_SHELL_SET                                      SHELL PRESSURE

            

      5.5 OTHERS:

 

General Comments: Convert NODE SET, ELEMENT SET. Delete all other cards that can't be converted.

 

         DYNA (V970)         ===>             NASTRAN

 

         DEFINE_COORDINATE_NODES                             LOCAL COORDINATE

         DEFINE_COORDINATE_SYSTEM                       LOCAL COORDINATE

         DEFINE_COORDINATE_VECTOR                        LOCAL COORDINATE

         DEFINE_CURVE                                             LOAD CURVE

 

 

6. CONVERTING FROM RADIOSS TO NASTRAN

 

      6.1 ELEMENT:

 

         RADIOSS (V4.1)           ===>             NASTRAN

 

         BEAM                                                  CBAR

         TRUSS                                                     CROD

         SOLID                                                  SOLID

         SHELL                                            SHELL

         SPRING                                           ELAS1(3rd node is converted to a LCS in NASTRAN)

         MASS                                                     CONM2

         JOINT                                                  RBE2

         RIGID BODY                                             RBE2

         SPOTWELD                                        RBAR

            

      6.2 ELEMENT PROPERTY:

 

General Comments:  Delete VOID, RIVET properties.

 

         RADIOSS (V4.1)           ===>             NASTRAN

 

         1 -SHELL                                                  PSHELL

         2 -TRUSS                                                 PROD

         3 -BEAM                                                   PBAR

         4 -SPRING                                                PELAS

         6 -ORTHOTROPIC SOLID                    PSOLID

         8 -GENERAL SPRING                                   PELAS

         9 -ORTHOTROPIC SHELL                    PSHELL

         10-COMP. SHELL                                     PSHELL

         11-COMP. SHELL                                      PSHELL

         12-3-NODES SPRING                                   PELAS

         13-BEAM TYPE SPRING                     PELAS

         14-GENERAL SOLID                                    PSOLID

 

      6.3 MATERIAL PROPERTY:

 

         All materials                                               MAT1

            

    

 

 6.4 BOUNDARY AND LOAD CONDITION:

 

        General Comments:  Delete PRESSURE LOAD.

 

         RADIOSS (V4.1)           ===>             NASTRAN

 

         SPC                                                      SPC

         CONCENTRATED LOAD                      NODE FORCE

         INITIAL VELOCITY                              INITIAL VELOCITY

            

      6.5 OTHERS:

 

General Comments: Delete NODE SET, SHELL SET, BEAM SET, SOLID SET, SPRING SET, TRUSS SET. Delete all others cards that can't be converted.

 

         RADIOSS (V4.1)           ===>             NASTRAN

 

         FUNCTION                                               LOAD CURVE

         SKEW (moving)                                        LOCAL COORDINATE

         SKEW (fixed)                                      LOCAL COORDINATE

 

 

7. CONVERTING FROM NASTRAN TO RADIOSS

 

7.1 ELEMENT:

 

General Comments: Delete RBE3 & CGAP elements.

 

         NASTRAN              ===>             RADIOSS (V4.1)

 

         CBAR                                       BEAM

         RBE2                               RIGID BODY

         SHELL                                   SHELL

         SOLID                                    SOLID

         CELAS2                                   SPRING(3rd node is created if necessary to define the direction)

         CELAS1                                     SPRING(3rd node is created if necessary to define the direction)

         RBAR                                    SPOTWELD

         CONM2                             MASS

         CBEAM                             BEAM

         CROD                                    TRUSS

         CTUBE                              BEAM

         ISOPARAMETRIC SHELL  SHELL

            

      7.2  ELEMENT PROPERTY:

 

General Comments: Delete PGAP properties.

 

         NASTRAN              ===>             RADIOSS (V4.1)

 

         PSHELL                                      1 -SHELL

         PSOLID                             14-GENERAL_SOLID

         PBAR                                        3 -BEAM

         PBEAM                             3 -BEAM

         PELAS                                       4 -SPRING

         PROD                                        2 -TRUSS

         PTUBE                             3 -BEAM

 

      7.3 MATERIAL PROPERTY:

 

         NASTRAN              ===>             RADIOSS (V4.1)

 

         MAT1                               1 -ELASTIC

 

      7.4 BOUNDARY AND LOAD CONDITION:

 

         NASTRAN              ===>             RADIOSS (V4.1)

 

         SPC                                            SPC

         NODE FORCE                                 CONCENTRATED LOAD

         SHELL PRESSURE                    PRESSURE LOAD

         INITIAL VELOCITY                     INITIAL_VELOCITY

            

      7.5 OTHERS:

 

     General Comments: Delete NODE SET, ELEMENT SET.

 

         NASTRAN              ===>             RADIOSS (V4.1)

 

         LOAD CURVE                                   FUNCTION

            LOCAL COORDINATE SYSTEM               SKEW_MOV

 

           

RADIOSS 4.4 Conversion to LS-DYNA & NASTRAN

 

 

8. CONVERTING FROM RADIOSS TO DYNA.

 

8.1 ELEMENT:

 

         RADIOSS(V4.4)          ===>      DYNA(V970)

 

         BEAM                                                  BEAM

 

         JOINT                                           If RADIOSS’s JOINT has 4 nodes, DSI

                                                             will convert it into two

                                                             *CONSTRAINED_NODAL_RIGID_BODY

                                                              and one *CONSTRAINED_JOINT_CYLINDRICAL.

                                                             Otherwise, DSI will convert it into

                                                              *CONSTRAINED_NODAL_RIGID_BODY.

        

         MASS                                                   MASS

         QUAD                                                   SHELL

 

         RBODY                                                If RADIOSS RIGID BODY does not have

                                                             mass and inertia, DSI will convert it

                                                               into *CONSTRAINED_NODAL_RIGID_BODY.

                                                             Otherwise, DSI will convert it into

                                                              *CONSTRAINED_NODAL_RIGID_BODY_INERTIA.

                                                               RADIOSS’s primary node(RBID) will be

                                                               used as DYNA’s “NODEID” in second card of

                                                              *CONSTRAINED_NODAL_RIGID_BODY_INERTIA.

 

         RIVET                                           *CONSTRAINED_SPOTWELD

                                                               If user need MAT100 spotweld instead

                                                             Of *CONSTRAINED_SPOTWELD, user can use

                                                             function “SPOTWELD TO MAT100 SP.”

                                                             under “ELEMENT OPTION/MODIFY/TYPE” to

                                                              convert it.

 

         RLINK                                                   *CONSTRAINED_NODAL_RIGID_BODY

         SHELL                                                  SHELL

         SHEL16                                             SOLID

         SOLID                                               SOLID

 

         SPRING                                              If this spring has element property

                                                          type 4, 8, 12, 13, DSI will convert it

                                                          into BEAM. Otherwise, DSI convert it

                                                          into spring.

        

         TRUSS                                              BEAM

         XELEM                                              *CONSTRAINED_NODAL_RIGID_BODY

            

      8.2 ELEMENT PROPERTY:

        

Delete VOID, RIVET, KJOINT, NSTRAND property.

              Convert spring stiffness into DYNA material.

 

         RADIOSS (V4.4)         ===>      DYNA (V970)

 

         1 -SHELL                                          SECTION_SHELL

         2 -TRUSS                                          SECTION_BEAM(truss)

         3 -BEAM                                           SECTION_BEAM(resultant)

         4 -SPRING                                         SECTION_BEAM(discrete)

         6 –SOL_ORTH                                 SECTION_SOLID

         8 –SPR_GENE                                   SECTION_BEAM(discrete)

         9 –SH_ORTH                                    SECTION_SHELL

         10-SH_COMP                      SECTION_SHELL

         11-SH_SANDW                                 SECTION_SHELL

         12-SPR_PUL                                   SECTION_BEAM(discrete)

         13-SPR_BEAM                                  SECTION_BEAM(discrete)

         14-SOLID                                       SECTION_SOLID

         32-SPR_PRE                        SECTION_DISCRETE

         35-STITCH                          SECTION_DISCRETE

         36-PREDIT                         SECTION_BEAM(resultant)

 

         CONVERT RADIOSS’s SPRING PROPERTY(TYPE 4,8,12,13) INTO DYNA's

         MATERIAL 196.

 

         IF H=0, N1=0: LINEAR ELASTIC SPRING

                       K(DYNA) = K(RADIOSS)

                       D(DYNA) = C(RADIOSS)

         IF H=0, N1>0: NONLINEAR ELASTIC SPRING

                       K(DYNA) = A(RADIOSS)  (IF A(RADIOSS)=0.0, THEN

                                              K(DYNA)=1.0)

                       C2(DYNA) = B(RADIOSS)/A(RADIOSS)

                       FLCID=GLCID = N1(RADIOSS)

                       HLCID = N2(RADIOSS)

                       DLE(DYNA) = D(RADIOSS)             

         IF H=1, N1>0:

                       K(DYNA) = K(RADIOSS)

                       A(RADIOSS) = 1.0 IS ASSUMED

                       C2(DYNA) = B(RADIOSS)

                       FLCID=GLCID = N1(RADIOSS)

                       HLCID = N2(RADIOSS)

                       DLE(DYNA) = D(RADIOSS)

 

         CONVERT RADIOSS SPRING INTO DYNA BEAM.

         IN ALL CASES, IF LENGTH OF SPRING IS FINITE, SET “SCOOR” OF

         *SECTION_BEAM TO 2. IF LENGTH IS VERY SMALL(<=0.000001) OR ZERO,

         SET “SCOOR” TO 0. IF RADIOSS DOES NOT HAVE INER VALUE, DSI SET

         It AS 1.0.

 

      8.3 MATERIAL PROPERTY:

 

         RADIOSS(V4.4)          ===>      DYNA(V970)

 

         0 -VOID                                             9  -MAT_NULL

         1 –ELAST                                                 1  -MAT_ELASTIC

         2 -PLAS_JOHNS or PLAS_ZERIL              98 -MAT_SIMPLIFIED_JOHNSON_COOK

         3 –HYDPLA                             10 -MAT_ELASTIC_PLASTIC_HYDRO

         4 -HYD_JCOOK                                15 -MAT_JOHNSON_COOK

         6 -HYD_VISC                                       9  -MAT_NULL

         10-LAW10                                         63 -MAT_CRUSHABLE_FOAM

         14-COMPSO                            2  -MAT_ORTHOTROPIC_ELASTIC

         15-CHANG                                      2  -MAT_ORTHOTROPIC_ELASTIC

         19-FABRI                                           130-MAT_SPECIAL_ORTHOTROPIC

 

         21-DPRAG                                   57 -MAT_LOW_DENSITY_FOAM

        

         NOTE:

         There is no direct conversion of RADIOSS’s material type 21 to

         DYNA’s *MAT_LOW_DENSITY_FOAM.

         DSI uses the following example as DYNA’s material type 57 for seat foam.

           $ UNITS:  kg, mm, ms, GPa

           *MAT_LOW_DENSITY_FOAM

           $  seat foam

           571258.8200E-08    0.0045      2222       0.4       0.0       0.0       .05

           0.0       0.0       0.0       0.0       0.0       0.0  

           *DEFINE_CURVE

           2222         0       1.0      0.01       0.0       0.0         0

           0.0                 0.0

           0.0625              0.119800001

           0.122500002         0.383390009

           0.177499995         0.377400011

           0.234999999         0.413399994

           0.280699998         0.444999993

           0.344999999         0.466100007

           0.397000015         0.497999996

           0.444900006         0.53670001

           0.49000001          0.561600029

           0.528999984         0.601000011

           0.564999998         0.653999984

           0.597000003         0.721000016

           0.622500002         0.818000019

           0.644900024         0.897000015

           0.660000026         0.949999988

           0.666999996         0.989000022

           0.670000017         0.99000001

           0.671999991         1.0

           0.699000001         1.20000005

           0.75                1.51999998

           0.800000012         2.19000006

           0.808000028         2.30299997      

 

         22-DAMA                                           81 -MAT_PLASTICITY_WITH_DAMAGE

         23-LAW23                                          81 -MAT_PLASTICITY_WITH_DAMAGE

         24-CONC                                     16 -MAT_PSEUDO_TENSOR

         25-COMPSH                            2  -MAT_ORTHOTROPIC_ELASTIC

         27-PLAS_BRIT                                81 -MAT_PLASTICITY_WITH_DAMAGE

 

         28-HONEYCOMB                              26 -MAT_HONEYCOMB

        

         NOTE:

            DSI set DYNA's value PR=0.0, SIGY=1.0, VF=0.2, MU=0.2, and ELFORM=1

            in relative *SECTION_SOLID card. DSI create a *HOURGLASS card with

            IHQ=4, and put it into relative *PART's HGID field.

            In RADIOSS, if the relative element property ID is 0 or the element

            property type is not TYPE 6, DSI will set the material directions

            1,2,3 align with the global axes X,Y,Z, AOPT=2, (A1,A2,A3)=(1,0,0),

            (D1,D2,D3)=(0,1,0). Otherwise DSI will set AOPT=0, and map the

            RADIOSS 1,2,3 axes to the LS-DYNA b,c,a axes. The RADIOSS yield

            functions for the honeycomb material which have mu as the abscissa

            values must be converted into LS-DYNA curves with mu/(1+mu) as the

            abscissa values. In the above discussion, it is assumed that the

            angle PHI in the RADIOSS orthotropic solid property set data is set

            to zero.  If PHI is nonzero, further thought must be given to the

            conversion.

 

         32-HILL                                           3  -MAT_PLASTIC_KINEMATIC

         33-FOAM_PLAS                               53 -MAT_CLOSED_CELL_FOAM

         34-BOLTZMAN                                 61 -MAT_KELVIN-MAXWELL_VISCOELASTIC

         35-FOAM_VISC                                76 -MAT_GENERAL_VISCOELASTIC

         36-PLAS_TAB                                  24 -MAT_PIECEWISE_LINEAR_PLASTICITY

         38-VISC_TAB                                   76 -MAT_GENERAL_VISCOELASTIC

         40-KELVINMAX                                 76 -MAT_GENERAL_VISCOELASTIC

         42-OGDEN                                          77 -MAT_OGDEN_RUBBER

         43-HILL_TAB                       24 -MAT_PIECEWISE_LINEAR_PLASTICITY

         44-COWPER                                    98 -MAT_SIMPLIFIED_JOHNSON_COOK

         48-ZHAO                                       98 -MAT_SIMPLIFIED_JOHNSON_COOK

         49–STEINB                              10 -MAT_ELASTIC_PLASTIC_HYDRO

         50-LAW50                                          26 -MAT_HONEYCOMB

         52-GURSON                                  98 -MAT_SIMPLIFIED_JOHNSON_COOK

         53-LAW53                                          26 -MAT_HONEYCOMB

         54–LAW54                                              1  -MAT_ELASTIC

            

      8.4 BOUNDARY AND LOAD CONDITION:

 

         RADIOSS (V4.4)         ===>      DYNA (V970)

 

         BCS                                                   BOUNDARY_SPC_SET

         CLOAD                                                LOAD_NODE_SET

         GRAVITY                                            LOAD_BODY

         INITIAL VELOCITY                                            INITIAL_VELOCITY

         IMPOSED DISPLACEMENT                           BOUNDARY_PRESCRIBED_MOTION_SET

         IMPOSED VELOCITY                                   BOUNDARY_PRESCRIBED_MOTION_SET

         IMPOSED ACCELERATION                           BOUNDARY_PRESCRIBED_MOTION_SET

         MPC                                                          CONSTRAINED_LINEAR_LOCAL

         PLOAD                                                 LOAD_SEGMENT_SET

            

      8.5 CONTACT AND RIGIDWALL:

 

         Delete RIGIDWALLs which do not have nodes.

 

         RADIOSS(V4.4)          ===>      DYNA(V970)

       

         TYPE2 -TIED                             CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE3 -SLIDE/VOID                         CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE5 -SLIDE/VOID                         CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE6 -SLIDE/VOID                         CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE7 -SLIDE/VOID                         CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE8 -SLIDE                              CONTACT_DRAWBEAD

         TYPE10-TIED/VOID                          CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE11-SLIDE/VOID                        CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE14-SLIDE/VOID                        CONTACT_AUTOMATIC_SINGLE_SURFACE

         TYPE15-SLIDE/VOID                        CONTACT_AUTOMATIC_SINGLE_SURFACE

 

         LAGMUL TYPE2 -TIED                     CONTACT_AUTOMATIC_SINGLE_SURFACE

         LAGMUL TYPE7 -SLIDE/VOID                   CONTACT_AUTOMATIC_SINGLE_SURFACE

         LAGMUL TYPE16-SLIDE/VOID         CONTACT_AUTOMATIC_SINGLE_SURFACE

         LAGMUL TYPE17-SLIDE/VOID         CONTACT_AUTOMATIC_SINGLE_SURFACE

        

         NOTE:

         Or create a new *CONTACT_AUTOMATIC_SINGLE_SURFACE to replace all  RADIOSS’s contact.

         Set all *CONTACT_AUTOMATIC_SINGLE_SURFACE's SOFT=1, IGAP=2, IGNORE=1.

         If RADIOSS data does not have FS, DSI will set it as 0.2. Moreover,

         set FD as 0.2.

        

         RIGIDWALL                             RIGIDWALL_GEOMETRIC

 

      8.6. AIRBAG(MONITORED VOLUMES):

 

         MONITORED VOLUMES                AIRBAG_SIMPLE_AIRBAG_MODEL

           If this MONITORED VOLUMES is a tire model, we suggest use

           AIRBAG_SIMPLE_PRESSURE_VOLUME instead of AIRBAG_SIMPLE_AIRBAG_MODEL.

              

         REPLACE THE ORIGINAL MATERIAL WITH *MAT_FABRIC.

 

      8.7 SEATBELT:

 

CONVERT RADIOSS'S MATERIAL TYPE 1 WHICH HAS VERY SMALL YOUNG'S MODULUS  INTO DYNA'S *MAT_FABRIC.

 

      8.8 OTHERS:

 

         Delete all other cards that can't be converted to DYNA.

 

         RADIOSS (V4.4)         ===>             DYNA (V970)

 

       FUNCTION                                               DEFINE_CURVE

         FRAME                                                   DEFINE_COORDINATE

 

NOTE:

If you don’t have RADIOSS ENGINE file, DSI will set up DYNA *CONTROL

cards for you as follows.

 

$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8

*CONTROL_HOURGLASS

$      ihq        qh

         4        .1

*CONTROL_ACCURACY

$      osu       inn    pidosu

         0         2         0

*CONTROL_BULK_VISCOSITY

$       q2        q1      type

     1.500   0.06000         1

*CONTROL_CONTACT

$   slsfac    rwpnal    islchk    shlthk    penopt    thkchg     orien    enmass

   0.10000     1.000         2         0         1         1         2         0

$   usrstr    usrfrc     nsbcs    interm     xpene     ssthk      ecdt   tiedprj

         0         0        10         0     4.000         0         0         0

$    sfric     dfric       edc       vfc        th     th_sf    pen_sf

       0.0       0.0       0.0       0.0       0.0       0.0       0.0

$   ignore    frceng

         1         0

*CONTROL_ENERGY

$     hgen      rwen    slnten     rylen

         2         2         2         2

*CONTROL_OUTPUT

$    npopt    neecho    nrefup    iaccop     opifs    ipnint    ikedit    iflush

         0         0         0         0       0.0         0       200      5000

$    iprtf

         0

*CONTROL_SHELL

$   wrpang    itrist     irnxx    istupd    theory       bwc     miter      proj

    20.000         1        -1         0         2         2         1         0

$  rotascl    intgrd    lamsht

       0.0         0         0

*CONTROL_TERMINATION

$   endtim    endcyc     dtmin    endeng    endmas

     0.000         0       0.0       0.0       0.0

*CONTROL_TIMESTEP

$   dtinit    tssfac      isdo    tslimt     dt2ms      lctm     erode     ms1st

       0.0   0.90000         0       0.0 -1.100E-3         0         0         0

$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8

 

I.          If you don’t have RADIOSS ENGINE file, DSI will set up DYNA *DATABASE

   cards for you as following.

 

$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8

*DATABASE_ABSTAT

$       dt

      0.5

*DATABASE_GLSTAT

$       dt

      0.5

*DATABASE_MATSUM

$       dt

     1.000

*DATABASE_NODOUT

$       dt

      0.5

*DATABASE_RCFORC

$       dt

      0.5

*DATABASE_RWFORC

$       dt

      0.5

*DATABASE_SECFORC

$       dt

      0.5

*DATABASE_ELOUT

$       dt

      0.5

$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8

*DATABASE_BINARY_D3PLOT

$  dt/cycl      lcdt      beam     npltc

     5.000         0         0         0

*DATABASE_BINARY_D3DUMP

$  dt/cycl

   100000.

*DATABASE_BINARY_RUNRSF

$  dt/cycl

    1000.

$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8

 

 

 

9. CONVERTING FROM DYNA TO RADIOSS

 

9.1 ELEMENT:

 

         Delete PLOTEL, *CONSTRAINED_INTERPOLATION element.

 

         DYNA (V970)              ===>             RADIOSS (V4.4)

 

         BEAM                                                    BEAM

 

         DISCRETE                                             SPRING

         Convert DYNA’s VID into RADIOSS’s third node.

 

         INERTIA                                                  MASS

         MASS                                                       MASS

         SHELL                                                     SHELL

         SOLID                                                      SOLID

         T-SHELL                                             SOLID

 

         CONSTRAINED_NODAL_RIGID_BODY    RBODY

         CONSTRAINED_NODE_SET                      RBODY

         CONSTRAINED_SPOTWELD                      RIVET

         JOINT                                                      JOINT

         SEATBELT                            BEAM

            

      9.2 ELEMENT PROPERTY:

 

        Delete SPH, POINT_SOURCE, POINT_SOURCE_MIXTURE section.

         Convert DYNA’s spring stiffness into RADIOSS’s element property.

 

         DYNA (V970)              ===>             RADIOSS (V4.4)

 

         SECTION_BEAM (integrated)                 3 -BEAM

         SECTION_BEAM (resultant)                  3 -BEAM

         SECTION_BEAM (discrete)                   3 -BEAM

         SECTION_BEAM (truss)                                 3 -BEAM

         SECTION_BEAM (spotweld)                 3 –BEAM

         SECTION_BEAM (2D shells)                 3 -BEAM

         SECTION_DISCRETE                             4 -SPRING

         SECTION_SHELL                                  1 -SHELL

         SECTION_SHELL_ALE                          1 -SHELL

         SECTION_SOLID                                  14-SOLID

         SECTION_SOLID_ALE                          14-SOLID

         SECTION_TSHELL                                14-SOLID

         SECTION_SEATBELT                 3 -BEAM

 

      9.3 MATERIAL PROPERTY:

 

         DYNA (V970)              ===>             RADIOSS (V4.4)

 

         1  -MAT_ELASTIC                                           1 -ELAST

         1  -MAT_ELASTIC_FLUID                               1 -ELAST

         2  -MAT_ORTHOTROPIC_ELASTIC                     14-COMPSO

         2  -MAT_ANISOTROPIC_ELASTIC                  1 -ELAST

         3  -MAT_PLASTIC_KINEMATIC                       2 -PLAS_JOHNS

         4  -MAT_ELASTIC_PLASTIC_THERMAL             2 -PLAS_JOHNS

         5  -MAT_SOIL_AND_FOAM                            33-FOAM_PLAS

         6  -MAT_VISCOELASTIC                                34-BOLTZMAN

         7  -MAT_BLATZ-KO_RUBBER                            1 -ELAST

         8  -MAT_HIGH_EXPLOSIVE_BURN                     1 -ELAST

         9  -MAT_NULL                                             6 -HYD_VISC

         10 -MAT_ELASTIC_PLASTIC_HYDRO                  3 -HYDPLA

         10 -MAT_ELASTIC_PLASTIC_HYDRO_SPALL    3 -HYDPLA

         11 -MAT_STEINBERG                                      1 -ELAST

         11 -MAT_STEINBERG_LUND                   1 -ELAST

         12 -MAT_ISOTROPIC_ELASTIC_PLASTIC   2 -PLAS_JOHNS

            13 -MAT_ISOTROPIC_ELASTIC_FAILURE    2 -PLAS_JOHNS

         14 -MAT_SOIL_AND_FOAM_FAILURE                  33-FOAM_PLAS

         15 -MAT_JOHNSON_COOK                              4 -HYD_JCOOK

         16 -MAT_PSEUDO_TENSOR                             24-CONC

         17 -MAT_ORIENTED_CRACK                            2 -PLAS_JOHNS

         18 -MAT_POWER_LAW_PLASTICITY                   2 -PLAS_JOHNS

 

         19 -MAT_STRAIN_RATE_DEPENDENT_PLASTICITY   2 -PLAS_JOHNS

 

         20 -MAT_RIGID                                               1 -ELAST

         21 -MAT_ORTHOTROPIC_THERMAL                     14-COMPSO

         22 -MAT_COMPOSITE_DAMAGE                      14-COMPSO

 

         23 -MAT_TEMPERATURE_DEPENDENT_ORTHOTROPIC

                                                          14-COMPSO

 

         24 -MAT_PIECEWISE_LINEAR_PLASTICITY           36-PLAS_TAB

         25 -MAT_GEOLOGICAL_CAP_MODEL                   24-CONC

         26 -MAT_HONEYCOMB                                    2 -PLAS_JOHNS

         27 -MAT_MOONEY-RIVLIN_RUBBER                      1 -ELAST

         28 -MAT_RESULTANT_PLASTICITY                    2 -PLAS_JOHNS

         29 -MAT_FORCE_LIMITED                                   2 -PLAS_JOHNS

         30 -MAT_CLOSED_FORM_SHELL_PLASTICITY    2 -PLAS_JOHNS

            31 -MAT_FRAZER_NASH_RUBBER_MODEL            1 -ELAST

         32 -MAT_LAMINATED_GLASS                                     2 -PLAS_JOHNS

         33 -MAT_BARLAT_ANISOTROPIC_PLASTICITY     2 -PLAS_JOHNS

         33 -MAT_BARLAT_YLD96                                 2 -PLAS_JOHNS

         34 -MAT_FABRIC                                            14-COMPSO

         35 -MAT_PLASTIC_GREEN-NAGHDI_RATE             2 -PLAS_JOHNS

         36 -MAT_3-PARAMETER_BARLAT                     2 -PLAS_JOHNS

 

         37 -MAT_TRANSVERSELY_ANISOTROPIC_ELASTIC_PLASTIC

                                                                          2 -PLAS_JOHNS

 

         38 -MAT_BLATZ-KO_FOAM                               33-FOAM_PLAS

         39 -MAT_FLD_TRANSVERSELY_ANISOTROPIC         2 -PLAS_JOHNS

         40 -MAT_NONLINEAR_ORTHOTROPIC                    14-COMPSO

         41 -MAT_USER_DEFINED_MATERIAL_MODELS 1 -ELAST

            51 -MAT_BAMMAN                                        2 -PLAS_JOHNS

         52 -MAT_BAMMAN_DAMAGE                                       2 -PLAS_JOHNS

         53 -MAT_CLOSED_CELL_FOAM                            33-FOAM_PLAS

         54 -MAT_ENHANCED_COMPOSITE_DAMAGE      14-COMPSO

            57 -MAT_LOW_DENSITY_FOAM                           33-FOAM_PLAS

         58 -MAT_LAMINATED_COMPOSITE_FABRIC          14-COMPSO

         59 -MAT_COMPOSITE_FAILURE_SHELL_MODEL       14-COMPSO

         59 -MAT_COMPOSITE_FAILURE_SOLID_MODEL        14-COMPSO

            60 -MAT_ELASTIC_WITH_VISCOSITY                    1 -ELAST

         61 -MAT_KELVIN-MAXWELL_VISCOELASTIC         34-BOLTZMAN

         62 -MAT_VISCOUS_FOAM                                 33-FOAM_PLAS

         63 -MAT_CRUSHABLE_FOAM                                      10-LAW10

 

         64 -MAT_RATE_SENSITIVE_POWERLAW_PLASTICITY

                                                                2 -PLAS_JOHNS

 

         65 -MAT_MODIFIED_ZERILLI_ARMSTRONG            2 -PLAS_JOHNS

         66 -MAT_LINEAR_ELASTIC_DISCRETE_BEAM          1 –ELAST

         67 -MAT_NONLINEAR_ELASTIC_DISCRETE_BEAM    1 –ELAST

         68 -MAT_NONLINEAR_PLASTIC_DISCRETE_BEAM  2 -PLAS_JOHNS

         69 -MAT_SID_DAMPER_DISCRETE_BEAM             1 –ELAST

         70 -MAT_HYDRAULIC_GAS_DAMPER_DISCRETE_BEAM

                                            1 –ELAST

         71 -MAT_CABLE_DISCRETE_BEAM                        1 -ELAST

         72 -MAT_CONCRETE_DAMAGE                            24-CONC

         73 -MAT_LOW_DENSITY_VISCOUS_FOAM          33-FOAM_PLAS

         74 -MAT_ELASTIC_SPRING_DISCRETE_BEAM        1 -ELAST

         75 -MAT_BILKHU/DUBOIS_FOAM                      33-FOAM_PLAS

         76 -MAT_GENERAL_VISCOELASTIC                      35-FOAM_VISC

         77 -MAT_HYPERELASTIC_RUBBER                        42-OGDEN

         77 -MAT_OGDEN_RUBBER                                42-OGDEN

         78 -MAT_SOIL_CONCRETE                                 10-LAW10

         79 -MAT_HYSTERETIC_SOIL                              24-CONC

         80 -MAT_RAMBERG_OSGOOD                 1 -ELAST

         81 -MAT_PLASTICITY_WITH_DAMAGE                  22-DAMA

         83 -MAT_FU_CHANG_FOAM                              33-FOAM_PLAS

         86 -MAT_ORTHOTROPIC_VISCOELASTIC                  14-COMPSO

         87 -MAT_CELLULAR_RUBBER                             1 -ELAST

         88 -MAT_MTS                                                 1 -ELAST

         89 -MAT_PLASTICITY_POLYMER                             2 -PLAS_JOHNS

         90 -MAT_ACOUSTIC                                         1 -ELAST

         94 -MAT_INELASTIC_SPRING_DISCRETE_BEAM       1 -ELAST

         96 -MAT_BRITTLE_DAMAGE                              24-CONC

         98 -MAT_SIMPLIFIED_JOHNSON_COOK              2 -PLAS_JOHNS

         100-MAT_SPOTWELD                                       1 -ELAST

         103-MAT_ANISOTROPIC_VISCOPLASTIC               33-FOAM_PLAS

         104-MAT_DAMAGE_1                                     22-DAMA

         105-MAT_DAMAGE_2                                    22-DAMA

         116-MAT_COMPOSITE_LAYUP                    14-COMPSO

         117-MAT_COMPOSITE_MATRIX                     1 -ELAST

         118-MAT_COMPOSITE_DIRECT                     1 –ELAST

         123-MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY

                                                                36-PLAS_TAB

         124-MAT_PLASTICITY_COMPRESSION_TENSION      2 -PLAS_JOHNS

         126-MAT_MODIFIED_HONEYCOMB               2 -PLAS_JOHNS

         127-MAT_ARRUDA_BOYCE_RUBBER             42-OGDEN

         128-MAT_HEART_TISSUE                             1 -ELAST

         129-MAT_LUNG_TISSUE                                   1 -ELAST

         130-MAT_SPECIAL_ORTHOTROPIC                19-FABRI

 

         OTHER MATERIAL TYPE                                     1 -ELAST

 

      9.4 BOUNDARY AND LOAD CONDITION:

 

         DYNA (V970)              ===>             RADIOSS (V4.4)

 

          BOUNDARY_PRESCRIBED_MOTION(displacement)

                                                                         IMPOSED DISPLACEMENT

 

             BOUNDARY_PRESCRIBED_MOTION(velocity)

                                                                         IMPOSED VELOCITY

                           

             BOUNDARY_PRESCRIBED_MOTION(acceleration)

                                                                        IMPOSED ACCELERATION

 

            BOUNDARY_SPC                                     BCS

            CONSTRAINED_LINEAR               MPC

            INITIAL_VELOCITY                                           INITIAL VELOCITY

            LOAD_NODE                                               CLOAD

         (Deleted when DOF is 4 or 8.)

 

           LOAD_SEGMENT                                      PLOAD

           LOAD_SHELL                                        PLOAD

 

 

      9.5 CONTACT AND RIGIDWALL:

 

         DSI deletes CONTACT_ENTITY, CONTACT_INTERIOR, CONTACT_1D,

            CONTACT_2D_OPTIONS, CONTACT_GEBOD_OPTION,

            CONTACT_RIGID_SURFACE, CONTACT_AUTO_MOVE,

            CONTACT_COUPLING.

 

         DYNA (V970)              ===>             RADIOSS (V4.4)

 

         CONTACT_AIRBAG_SINGLE_SURFACE                    TYPE7 -SLIDE/VOID

         CONTACT_AUTOMATIC_GENERAL                          TYPE7 -SLIDE/VOID

         CONTACT_AUTOMATIC_GENERAL_INTERIOR          TYPE7 -SLIDE/VOID

         CONTACT_AUTOMATIC_NODES_TO_SURFACE         TYPE7 -SLIDE/VOID

                                                                    

         CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE

                                                                                 TYPE7 -SLIDE/VOID

 

         CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE_TIEBREAK

                                                                    TYPE7 -SLIDE/VOID

                    

         CONTACT_AUTOMATIC_SINGLE_SURFACE            TYPE7 -SLIDE/VOID

         CONTACT_AUTOMATIC_SURFACE_TO_SURFACE TYPE7 -SLIDE/VOID

 

         CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_TIEBREAK

                                                                    TYPE7 -SLIDE/VOID

 

       CONTACT_CONSTRAINT_NODES_TO_SURFACE        TYPE7 -SLIDE/VOID

         CONTACT_CONSTRAINT_SURFACE_TO_SURFACE      TYPE7 -SLIDE/VOID

             CONTACT_DRAWBEAD                                            TYPE8 –SLIDE

         CONTACT_DRAWBEAD_INITIALIZE                      TYPE8 –SLIDE

         CONTACT_ERODING_NODES_TO_SURFACE         TYPE7 -SLIDE/VOID

         CONTACT_ERODING_SINGLE_SURFACE                     TYPE7 -SLIDE/VOID

         CONTACT_ERODING_SURFACE_TO_SURFACE                TYPE7 -SLIDE/VOID

         CONTACT_FORCE_TRANSDUCER_PENALTY               TYPE7 -SLIDE/VOID

         CONTACT_FORCE_TRANSDUCER_CONSTRAINT            TYPE7 -SLIDE/VOID

         CONTACT_FORMING_NODES_TO_SURFACE               TYPE7 -SLIDE/VOID

         CONTACT_FORMING_ONE_WAY_SURFACE_TO_SURFACE 

TYPE7 -SLIDE/VOID

         CONTACT_FORMING_SURFACE_TO_SURFACE               TYPE7 -SLIDE/VOID

         CONTACT_NODES_TO_SURFACE                      TYPE7 -SLIDE/VOID

         CONTACT_NODES_TO_SURFACE_INTERFERENCE

TYPE7 -SLIDE/VOID

         CONTACT_ONE_WAY_SURFACE_TO_SURFACE             TYPE7 -SLIDE/VOID

 

         CONTACT_ONE_WAY_SURFACE_TO_SURFACE_INTERFERENCE

                                                                     TYPE7 -SLIDE/VOID

 

         CONTACT_RIGID_NODES_TO_RIGID_BODY                  TYPE7 -SLIDE/VOID

         CONTACT_RIGID_BODY_ONE_WAY_TO_RIGID_BODY    TYPE7 -SLIDE/VOID

         CONTACT_RIGID_BODY_TWO_WAY_TO_RIGID_BODY    TYPE7 -SLIDE/VOID

         CONTACT_SINGLE_EDGE                              TYPE7 -SLIDE/VOID

         CONTACT_SINGLE_SURFACE                                            TYPE7 -SLIDE/VOID

         CONTACT_SLIDING_ONLY                                         TYPE7 -SLIDE/VOID

         CONTACT_SLIDING_ONLY_PENALTY                            TYPE7 -SLIDE/VOID

         CONTACT_SPOTWELD                              TYPE7 -SLIDE/VOID

         CONTACT_SPOTWELD_WITH_TORSION                 TYPE7 -SLIDE/VOID

         CONTACT_SURFACE_TO_SURFACE                             TYPE7 -SLIDE/VOID

         CONTACT_SURFACE_TO_SURFACE_THERMAL          TYPE7 -SLIDE/VOID

         CONTACT_SURFACE_TO_SURFACE_INTERFERENCE    TYPE7 -SLIDE/VOID

         CONTACT_TIEBREAK_NODES_TO_SURFACE        TYPE7 -SLIDE/VOID

         CONTACT_TIEBREAK_NODES_ONLY                  TYPE7 -SLIDE/VOID

         CONTACT_TIEBREAK_SURFACE_TO_SURFACE              TYPE7 -SLIDE/VOID

         CONTACT_TIED_NODES_TO_SURFACE                       TYPE7 -SLIDE/VOID

         CONTACT_TIED_NODES_TO_SURFACE_OFFSET        TYPE7 -SLIDE/VOID

         CONTACT_TIED_NODES_TO_SURFACE_CONSTRAINED_OFFSET

                                     TYPE7 -SLIDE/VOID

         CONTACT_TIED_SHELL_EDGE_TO_SURFACE       TYPE7 -SLIDE/VOID

         CONTACT_TIED_SHELL_EDGE_TO_SURFACE_OFFSET   TYPE7 -SLIDE/VOID

         CONTACT_TIED_SHELL_EDGE_TO_SURFACE_BEAM_OFFSET

                                                                     TYPE7 -SLIDE/VOID

         CONTACT_TIED_SHELL_EDGE_TO_SURFACE_CONSTRAINED_OFFSET

                                      TYPE7 -SLIDE/VOID

         CONTACT_TIED_SURFACE_TO_SURFACE                   TYPE7 -SLIDE/VOID

         CONTACT_TIED_SURFACE_TO_SURFACE_OFFSET     

TYPE7 -SLIDE/VOID

         CONTACT_TIED_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET

                                                                      TYPE7 -SLIDE/VOID

         CONTACT_TIED_SURFACE_TO_SURFACE_FAILURE      TYPE7 -SLIDE/VOID

         RIGIDWALL                                                                 RWALL

 

      9.6 OTHERS:

 

         Delete all other cards that can't be converted to RADIOSS.

 

         DYNA (V970)             ===>             RADIOSS (V4.4)

 

       DEFINE_COORDINATE                             FRAME

        DEFINE_CURVE                                         FUNCTION

 

 

 

10. CONVERTING FROM NASTRAN TO DYNA

 

 10.1 ELEMENT:

 

         When some RBE2 share the common node, merge them into one RBE2.

         Delete CGAP elements.

 

         NASTRAN                ===>             DYNA (V970)

 

       CBAR                                                           BEAM

 

         RBE2                                                  If NASTRAN’s DOF is 123456, convert it

                                                              into DYNA’s

                                                              *CONSTRAINED_NODAL_RIGID_BODY.

                                                             Otherwise, convert it into DYNA’s

                                                              *CONSTRAINED_NODE_SET.

 

         SHELL                                                       SHELL

         SOLID                                                              SOLID

 

         CELAS2                                                     DISCRETE

                                                                     Create a *DEFINE_SD_ORIENTATION for

                                                                                         spring direction.

 

         CELAS1                                                     DISCRETE

                                                                     Create a *DEFINE_SD_ORIENTATION for

                                                                                         spring direction.

 

         RBAR                                                             CONSTRAINED_SPOTWELD

         CONM2                                                      MASS & INERTIA

         CBEAM                                                      BEAM

         CROD                                                        BEAM

         CTUBE                                                       BEAM

         ISOPARAMETRIC SHELL                               SHELL

         RBE3                                           CONST. INTERPOLATION

            

 

      10.2 ELEMENT PROPERTY:

 

         DSI deletes PGAP property. DSI converts spring stiffness into DYNA material.

 

         NASTRAN           ===>            DYNA (V970)

 

         PSHELL                                  SECTION_SHELL

         PSOLID                                  SECTION_SOLID

         PBAR                                  SECTION_BEAM (resultant)

         PBEAM                                   SECTION_BEAM (resultant)

         PELAS                                   SECTION_DISCRETE

         PROD                                     SECTION_BEAM (truss)

         PTUBE                                    SECTION_BEAM (integrated)

        

 

      10.3 MATERIAL PROPERTY:

 

         NASTRAN                ===>             DYNA (V970)

 

         MAT1                                           1 -MAT_ELASTIC

 

 

      10.4 BOUNDARY AND LOAD CONDITION:

 

         NASTRAN                ===>             DYNA(V970)

 

        SPC                                      BOUNDARY_SPC_SET

         NODE FORCE                          LOAD_NODE_SET

         SHELL PRESSURE                             LOAD_SHELL_SET

         INITIAL VELOCITY                       INITIAL_VELOCITY

            

      10.5 OTHERS:

 

         DSI converts NODE SET, ELEMENT SET.

 

         NASTRAN                ===>             DYNA (V970)

 

         LOAD CURVE                                          DEFINE_CURVE

          LOCAL COORDINATE                       DEFINE_COORDINATE_SYSTEM

 

 

11. CONVERTING FROM DYNA TO NASTRAN

 

      11.1 ELEMENT:

 

         Delete SEATBELT & JOINT elements.

 

         DYNA (V970)              ===>            NASTRAN

 

       BEAM                                                            CBAR, CBEAM, CROD

                                                            According to it's element property.

                                              

         CONSTRAINED_NODAL_RIGID_BODY     RBE2

         T-SHELL                                                SOLID

         SHELL                                                          SHELL

         SOLID                                                           SOLID

         DISCRETE                                               CELAS1

                                                            Create a LCS for spring direction.

 

         MASS                                                        CONM2

         CONSTRAINED_SPOTWELD                     RBAR

         INERTIA                                                CONM2

         CONSTRAINED_NODE_SET                      RBE2

            

 

      11.2 ELEMENT PROPERTY:

 

         DSI seletes SEATBELT section and converts spring stiffness into element property.

 

         DYNA (V970)              ===>             NASTRAN

 

         SECTION_BEAM(integrated)                  PBAR

                                                                 According to it's ELFORM and CST.

 

         SECTION_BEAM (resultant)                      PBAR

         SECTION_BEAM (discrete)                       PBAR

         SECTION_BEAM (truss)                                     PROD

         SECTION_BEAM (spotweld)                     PBAR

         SECTION_DISCRETE                                  PELAS

         SECTION_SHELL                                   PSHELL

         SECTION_SOLID                                   PSOLID

         SECTION_SOLID_ALE                               PSOLID

         SECTION_TSHELL                                     PSOLID

 

 

      11.3 MATERIAL PROPERTY:

 

         All material                       MAT1.

 

 

      11.4  BOUNDARY AND LOAD CONDITION:

 

         DYNA (V970)              ===>             NASTRAN

 

         BOUNDARY_SPC_NODE                          SPC

         BOUNDARY_SPC_SET                             SPC

         INITIAL_VELOCITY                                   INITIAL V    ELOCITY

         INITIAL_VELOCITY_NODE                         INITIAL VELOCITY

         INITIAL_VELOCITY_GENERATION             INITIAL VELOCITY

         LOAD_NODE_POINT                                 NODAL FORCE

         LOAD_NODE_SET                                     NODAL FORCE

         LOAD_SHELL_ELEMENT                          SHELL PRESSURE

         LOAD_SHELL_SET                                  SHELL PRESSURE

            

 

 

      11.5 OTHERS:

 

       Convert NODE SET, ELEMENT SET.  Delete all other cards that can't be converted.

 

         DYNA (V970)              ===>            NASTRAN

 

       DEFINE_COORDINATE_NODES                  LOCAL COORDINATE

         DEFINE_COORDINATE_SYSTEM              LOCAL COORDINATE

         DEFINE_COORDINATE_VECTOR               LOCAL COORDINATE

         DEFINE_CURVE                                    LOAD CURVE

 

 

 

12. CONVERTING FROM RADIOSS TO NASTRAN

 

 

     12.1 ELEMENT:

 

         RADIOSS (V4.4)         ===>            NASTRAN

 

         BEAM                                                             CBAR

         JOINT                                                              RBE2

         MASS                                                            CONM2

         QUAD                                                      SHELL

          RBODY                                                          RBE2

         RIVET                                                              RBAR

         RLINK                                               RBE2

         SHELL                                                            SHELL

         SHEL16                                                      SOLID

         SOLID                                                              SOLID

              SPRING                                                             CELAS1

                                             (The third node is converted into an LCS.)

         TRUSS                                                            CROD

         XELEM                                                       RBE2

            

 

      12.2 ELEMENT PROPERTY:

 

         Delete TYPE0(VOID), TYPE5(RIVET), TYPE28(NSTRAND) property.

 

         RADIOSS (V4.4)         ===>             NASTRAN

 

         1 -SHELL                                             PSHELL

         2 -TRUSS                                             PROD

         3 -BEAM                                              PBAR

         4 -SPRING                                             PELAS

         6 -ORTHOTROPIC SOLID                           PSOLID

         8 -GENERAL SPRING                                PELAS

         9 -ORTHOTROPIC SHELL                          PSHELL

         10-COMP. SHELL                                  PSHELL

         11-COMP. SHELL                                   PSHELL

         12-3-NODES SPRING                                PELAS

         13-BEAM TYPE SPRING                           PELAS

         14-GENERAL SOLID                                 PSOLID

         32-PRETENSIONNER SPRING                   PELAS

         33-JOINT TYPE SPRING                           PELAS

         35-AIRBAG STITCH SPRING                    PELAS

         36-PREDIT SPRING                                   PELAS

 

 

      12.3 MATERIAL PROPERTY:

 

         All materials                                  MAT1

            

 

      12.4 BOUNDARY AND LOAD CONDITION:

 

         DSI deletes PRESSURE LOAD.

 

         RADIOSS (V4.4)         ===>             NASTRAN

 

         BCS                                                  SPC

           CLOAD                                          NODE FORCE

            INITIAL VELOCITY                                   INITIAL VELOCITY

            

      12.5 OTHERS:

 

        DSI deletes all other cards that can't be converted.

 

         RADIOSS (V4.4)         ===>             NASTRAN

 

       FUNCTION                                              LOAD CURVE

         FRAME                                                 LOCAL COORDINATE

 

 

13. CONVERTING FROM NASTRAN TO RADIOSS

 

13.1 ELEMENT:

 

         Delete RBE3, CGAP element.

 

     NASTRAN       ===>             RADIOSS (V4.4)

 

       CBAR                                     BEAM

         RBE2                                     RBODY

         SHELL                                          SHELL

         SOLID                                          SOLID

         CELAS2                                        SPRING

                                               (Create a node for spring direction.)

         CELAS1                                  SPRING

                                               (Create a node for spring direction.)

         RBAR                                           RIVET

         CONM2                                   MASS

         CBEAM                                   BEAM

         CROD                                           TRUSS

         CTUBE                                    BEAM

         ISOPARAMETRIC SHELL         SHELL

            

 

      13.2 ELEMENT PROPERTY:

 

         DSI deletes PGAP properties.

 

         NASTRAN       ===>            RADIOSS (V4.4)

 

       PSHELL                                    1 -SHELL

         PSOLID                                   14-GENERAL_SOLID

         PBAR                                    3 -BEAM

         PBEAM                                    3 -BEAM

         PELAS                                   4 -SPRING

         PROD                                    2 -TRUSS

         PTUBE                                    3 -BEAM

 

 

      13.3 MATERIAL PROPERTY:

 

         NASTRAN      ===>             RADIOSS (V4.4)

 

         MAT1                                  1 -ELASTIC

 

      13.4 BOUNDARY AND LOAD CONDITION:

 

         NASTRAN       ===>             RADIOSS (V4.4)

 

       SPC                                          BCS

         NODE FORCE                              CLOAD

         SHELL PRESSURE                          PLOAD

         INITIAL VELOCITY                           INITIAL VELOCITY

            

      13.5 OTHERS:

 

        DSI deletes all other cards that can't be converted.

 

         NASTRAN       ===>             RADIOSS (V4.4)

 

       LOAD CURVE                                    FUNCTION

         LOCAL COORDINATE SYSTEM                 FRAME